India mandates Truecaller, other caller-ID apps to share spam call reports

India has introduced revised regulatory measures targeting unsolicited voice calls and messages, imposing new obligations on caller-identification and call-management applications—including Truecaller—to transmit user-submitted spam call reports directly to telecommunications service providers.

Blockchain-Based Reporting Platform

Under amendments approved by the Telecom Regulatory Authority of India (TRAI), such reports will be routed through a blockchain-enabled platform operated jointly by telecom companies. The objective is to integrate user-generated spam data into telecom operators’ internal systems and enable enforcement actions against entities originating nuisance calls.

TRAI stated the revision aims to broaden the pool of actionable data available to combat spam calls and messages. Truecaller formally objected to the requirement, characterizing it as a “one-way data exchange” and asserting it violates fair competition principles—particularly because it mandates transfer of data collected by third-party call-management applications to incumbent telecom providers.

AI-Driven and Automated Calls Now Regulated

The updated framework extends beyond caller-ID apps to cover automated voice communications, including those generated by software or AI-powered voice agents. Calls initiated without direct human action—from application-to-person (A2P) systems—are now explicitly classified under the A2P category, encompassing both pre-recorded and AI-synthesized voice calls.

Organizations deploying A2P systems must notify telecom providers in advance of their usage, disclosing the specific telephone numbers involved. Any A2P call conducted without prior notification will be treated as a spam call under the new rules.

Fees, Data Questions, and Scope Uncertainties

The regulations permit telecom operators to levy termination charges of up to five paise per minute for A2P calls, with exemptions applying to certain designated number ranges. However, several operational questions remain unresolved: the precise volume and categories of data caller-ID apps must share; the mechanisms for informing users or obtaining their consent; and protocols governing storage and subsequent use of that data.

It is also unclear whether the rules will apply to built-in spam reporting features embedded natively in mobile operating systems—such as those present in Android and iOS platforms. The measures follow widespread proliferation of fraudulent and intrusive calls across India; according to Truecaller’s own data, Indian users received approximately 42 billion spam calls in 2025, with the app blocking roughly 12 billion of them.